Stig Oprann / EWEA2012 Copenhagen / INTPOW Breakfast seminar / 18.04.2012
ABB MV Switchgear
Offshore expertise applied
© ABB Group
April 19, 2012 | Slide 1
ABB in the wind market
Market leader in most product areas
Robotic paint
systems
FACTS
(SVC and
STATCOM)
HVDC Light
(underground or
subsea
connections to the
grid)
Medium
Voltage
Switchgear
Transformers
Motors, drives Generators
switches &
Converters
breakers
Transformers
© ABB Group
April 19, 2012 | Slide 2
Control
products
Substations and
Compact
substations
ABB in Norway
Power Products division – Medium Voltage
Global centre of excellence
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Key figures
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Core business
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© ABB Group
April 19, 2012 | Slide 3
Employees: >300
Export:>80%
35-40.000 FU’s
1.400 CSS
Production
Product development
Marketing – product support
Main products are SF6 insulated Ring Main Unit,
type SafeRing and Compact Switchgear type
SafePlus, for 12,24 and 36kV distribution
Substations for the Norwegian Market
ISO 9001 - ISO 14001 – OHS 18001 Certified
ABB Medium Voltage Switchgear
SafePlus 24 or 36
© ABB Group
April 19, 2012 | Slide 4
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Extremely slim switchgear – functional
unit only 420mm
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Strong capabilities for protection of
people and equipment
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Tested for harsh environmental and
climatic conditions
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Full voltage range from same factory
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For onshore and offshore wind
Wind installations
Purpose of the Medium Voltage Switchgear (MVSG)
Protect
Protection of the wind
turbine’s equipment on
the MV side of the
step-up transformer.
Protection of array and
sea cables
© ABB Group
April 19, 2012 | Slide 5
Connect
Connection point for
the wind turbines in a
string/radial
Control
Controlled remotely to
connect/disconnect
single wind turbines or
radials.
Communication with
feedback on all vital
functions
Offhore wind installations
Where is the MVSG used
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At offshore installations, the MVSG can have 3 different application areas:
1. As the connection unit for the seacables installed in the transition piece
2. As the protection and control unit of the wind turbine installed in the tower
section
3. A combination of the the 2 solutions above with the MVSG installed in the
tower section
MVSG in transition piece (DONG Energy)
© ABB Group
April 19, 2012 | Slide 6
MVSG in tower section(Siemens Wind Power)
Offhore wind installations
3 major challenges when engineering the MVSG
Climatic &
environmental
conditions
The MVSG installed either in the TP or the tower must
withstand the harsh offshore environment. Operation and
functionality of the unit must be secured during the lifetime of
the wind turbine
Safety of people
(HSE)
The operation of the MVSG must be safe and not damage
any people or equipment in case of a fault scenario
Accessability and
flexibility in
installation
In case the MVSG needs to be replaced, it must be possible
to do so without any major delay or cost
© ABB Group
April 19, 2012 | Slide 7
Offhore wind installations
Challenge: Climatic & environmental conditions
Offshore service
conditions for MVSG
Challenges:
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How severe is the service
conditions at site?
What is the customer
requirements to the installation?
How to test a complete
switchgear to verify?
© ABB Group
April 19, 2012 | Slide 8
We decided to...
Run a tailor made corrosion
test for a complete
switchgear
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Test based on ”ISO 16701
Corrosion of metal and alloys”
Duration of test was 113 day
The performed test is more severe
than IEC 60068-2-52
Outcome of the
testing
An offshore switchgear
version for service
conditions up to:
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Corrosivity class C4 (ISO 129442) in 15 years
Environmental class combination
according to IEC 60721-3-3 is
anticipated to be: 3K6, 3Z12, 3B1,
3C2, 3S1 and 3M2
Offhore wind installations
Challenge: Safety of people (HSE)
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In case of a fault scenario, the arc of the fault in the MVSG will create
smoke, heat and dangereous gases.
In small rooms with limited ventilation, the effects of the arc can be a risk
for peoples helth and damaging for surrounding components
Solutions:
II
The MVSG is equipped with arc
proof front covers and arc
channels at the back so that no
blast hits the operator of the
MVSG – hence a safe operation
is secured
© ABB Group
April 19, 2012 | Slide 9
I
Guided way for the gas
for each of the two
failures:
I – Failure inside tank
II – Failure inside Cable
compartment
In the rare event of arc-fault
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3 phase earthing switch
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Reacts on pressure
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No fatal pressure increase
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No arcing gases
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No need for arc-gas duct
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All parts inside the tank
Offhore wind installations
Challenge: Accessability and flexibility in installation
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© ABB Group
April 19, 2012 | Slide 10
If needed, it must be possible
to replace the MVSG through
the tower door of the wind
turbine.
The tower door is the only
acces to the interior of the
wind turbine
As it is a weak point, the
dimmensions are limited
With a MVSG with very
limited width, the replacing of
the unit is a quite simple
operation
References and project examples
© ABB Group
April 19, 2012 | Slide 11
References
Windfarm deliveries and WTM's
Offshore
Annual deliveries for appr 1800-2000 turbines
Installed base: 9000 turbines WW
© ABB Group
April 19, 2012 | Slide 12
Project examples with SafePlus SWG
Collgar Windfarm / Australia
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Collgar windfarm is located appr 25km south east of
Merredin in Western Australia. When completed it will be
the largest single stage WF in the southern hemisphere
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Facts:
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© ABB Group
April 19, 2012 | Slide 13
Owner: UBS International Infrastructure Fund (UBS) and
Retail Employees Superannuation Trust (REST).
Wind power units 111 x Vestas V90 2MW
Total power
206 MW
Annual output
792 GWh
ABB Switchgear solution: SafePlus 36 config De-V
Extensible version (2 separate gastanks) for easier
replacement if needed
Project examples with SafePlus SWG
Baltic 1 offshore Windfarm / Germany
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Baltic 1, operated by EnBW, is Germany’s first commercial
offshore wind farm in the Baltic sea.
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Facts:
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© ABB Group
April 19, 2012 | Slide 14
Operator/owner: EnBW
Wind power units 21 x Siemens SWT-2.3-93/2300kW
Water depth
16-19m
Total power
48.3 MW
Annual output
185 GWh
ABB Switchgear solution: SafePlus 36 config CV and CCV
with special treatment of the tank for corrosion protection +
extra cover on top of swg. (installed in TP)
Project examples with SafePlus SWG
Høg-Jæren Energipark / Norway
Turn key solution from ABB
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© ABB Group
April 19, 2012 | Slide 15
Opened september 2011
Yearly calculated production of about
228 GWH, equals the electricity
consumption of 13 000 households
26 windmills of 2,3 MW
 6 more windmills during 2012
 Height of tower: 80 meters
 Diameter of rotor: 92,6 meters
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The park is situated 10 km south of
Bryne, in Time and Hå municipalities
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Total park area: 1 240 000 square feet
Høg-Jæren Energipark / Norway
ABBs offering
The customers needs
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A correctly scaled system
for local power distribution
that takes into account the
special characteristics of
wind energy.
ABBs solution
 SafePlus compact
substation and transformer
for every wind turbine, as
well as main transformer,
compact substation,
breakers og control system
for the central substation.
Delivery scope
System
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Prestudy about area grid conditions
 Load calculations, dynamic
simulations, harmonic calculations
and more
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Electromechanic construction
 22 kV installation main building
 132 kV installation main building
 22 kV installation at windmill
 0,69 kV installation at windmill
Control system construction
Scada-system construction
Terminal programming
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Installation of all equipment
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Test of complete system
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© ABB Group
April 19, 2012 | Slide 17
Delivery scope
Products
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26 step up transformers of 2,6
MVA (22 /0,69 kV) - ABB Turkey
26 Safeplus CSS from ABB Skien
1 power transformer of 80 MVA
(132) 50 / 22 kV - ABB Finland
Breaker DCB 132 kV - ABB
Sweden
CT / VT – ABB Czeck Rep.
22 kV UniGear fields - ABB
Czech Republic
Station transformer - ABB Spain
Control system – ABB various
sites
© ABB Group
April 19, 2012 | Slide 18
Thank You
© ABB Group
April 19, 2012 | Slide 19